200020121110221 has 4 divisors (see below), whose sum is σ = 266693494813632. Its totient is φ = 133346747406812.

The previous prime is 200020121110177. The next prime is 200020121110231. The reversal of 200020121110221 is 122011121020002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200020121110221 - 2²¹ = 200020119013069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200020121110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200020121110231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33336686851701 + ... + 33336686851706.

It is an arithmetic number, because the mean of its divisors is an integer number (66673373703408).

Almost surely, 2^{200020121110221} is an apocalyptic number.

It is an amenable number.

200020121110221 is a deficient number, since it is larger than the sum of its proper divisors (66673373703411).

200020121110221 is an equidigital number, since it uses as much as digits as its factorization.

200020121110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66673373703410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 200020121110221 its reverse (122011121020002), we get a palindrome (322031242130223).

The spelling of 200020121110221 in words is "two hundred trillion, twenty billion, one hundred twenty-one million, one hundred ten thousand, two hundred twenty-one".